TITLE:
Dark Neutrinos
AUTHORS:
A. Nicolaidis
KEYWORDS:
Neutrinos; Neutrino Mass; Gravitational Clustering; Dark Matter; Polytrope Equation
JOURNAL NAME:
Journal of Modern Physics,
Vol.3 No.12,
December
31,
2012
ABSTRACT:
Solar, atmospheric and reactor neutrino experiments established that neutrinos are massive. It is quite natural then to consider neutrinos as candidate particles for explaining the dark matter in halos around galaxies. We study the gravitational clustering of these neutrinos within a model of a massive core and a surrounding spherical neutrino halo. The neutrinos form a degenerate Fermi gas and a loaded polytropic equation is established. We solve the equation and we obtain the neutrino density in a galaxy, the size of the galaxy and the galactic rotational curves. The available data favor a neutrino with a mass around 10 eV. The consequent cosmological implications are examined.